A visual proof for the sum of the first \(n\) triangular numbers

DOI10.1007/s00283-009-9104-4zbMath1187.00028OpenAlexW1984639557MaRDI QIDQ968794

Hasan Unal

Publication date: 10 May 2010

Published in: The Mathematical Intelligencer (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/s00283-009-9104-4

Mathematics Subject Classification ID

Methodology of mathematics (00A35) Combinatorics (educational aspects) (97K20)

Cites Work

• Some concepts of bivariate symmetry